This rear sprocket is used on the Chinese 50cc-125cc engines. This sprocket has 37 teeth and is compatible with the 420 chain only.
- #420 chain used on ATV's usually with a 7 inch rear wheel or smaller
- 37 Teeth
- Center hole diameter: 48mm (1.89")
- Mounting holes: 48mm (1.89") center to center (side by side)
- Mounting holes distance: 68mm (2.68") straight across
- Overall diameter: 155mm (4.53")
- will NOT fit Kazuma ATV's (90cc & under use #428 chain)
Be sure to measure your chain or current sprocket before ordering. 420 chain has 1/2" pitch and 5/16" roller diameter.